Improvement in furnaces



OOOOOOOOOOOOOO O O G O O O O N. PETERS, fHDTo-UTNOGRAPHER. WASHINGTONv DC4 l'NiTEn l STATES PATENT EETCEO iMPRoVEMENT IN FUaNAoEs.

Specification forming part of Letters Patent No. 38,885, dated June 16,1863.

.To all whom it may concern:

Be it known that I, NAPOLEON FLIX Bo- EUKo DE GHoDzKo, of the city ofParis, in the Empire of France, have invented a certain new and usefulImprovement in Smoke or Gas Consuming Furnaces; and I do hereby declarethat the following is a full, clear, and exact description of the same,reference being made to the accompanying drawings, making a part of thisspecification, and to the figures and letters of reference markedthereon.

A purpose of said invention is the consumption of all ingredients orcomponent parts or elements of smoke that under any circumstances can beconsumed.

The ordinary furnace is divided into two compartments lengthwise, anupper and a lower one, each supplied with grate-bars' in the usualmanner from the front to the extreme back part, and with doors at theentrance of each compartment. The upper part is intended for feeding'the fuel, and the lower for raking the cinders or coke sofas to allowthem to fall into the lower compartment. When necessary, openings aremade in the brick-work of the furnace to allow the air to pass, whichexpands in the tliies, and a vault being made in the interior of thefurnace acts as a barrier to the oveiheated air between the vault andthe grate-bars of the lower fireplace, which facilitates the combustionof the smoke or gas, forcing it to descend under the bridge and passthrough the burning coke spread out upon the lower compartment. The tireis lit on the upper grate, and when the coal is reduced into coke it ispushed down by a rake or poker to fall on the lower gratebars, alwaysreserving a sufficient quantity of burning` coke in the uppercompartment to light the fresh coal introduced. When the lowercompartment is sufficiently supplied with burning coke, thesmoke-consuming process is perfect.

Figure 1, Sheet 1 of the drawings or illustrations, represents alongitudinal section of the interior of a furnace to which thesmokeconsuming apparatus is applied. Fig. 2 represents an end elevation5 Fig. 3, a sectional plan, and Fig. 4 a vertical section, of same. Fig.5, Sheet 2, represents a longitudinal section of the fire-grate asapplied in the internal tube of a boiler with a metal tube over thelower fire-grate to act as a deiiector. Fig. 6

represents a cross-section 5 Fig. 7, a longitudinal section withdeiector of fire-bricks or lire-lumps, and Fig. 8, a cross-section ofsame.

a are the upper firegrates or compartments; b, the lower tre-grates orcompartments; c, the fire-bars; d, the lug, projection, or hookofre-bar, and e the smoke or gas deector.

The furnace is divided into Lipper and lower fire-grates orcompartments, supplied with gratebars c, and with lire-doors at thefront of the upper and lower re-grates or compartments, respectively..The upper lire-grate, a, Sheets l and 2, receives the fuel in the usualmanner, part of which fuel, when partially consumed-that is to say,reduced to a state of coke-is pushed into the lower fire-grate, b,sufficient fuel being left on the upper grate, a, to ignite the freshfuel which is nowV to be supplied, and, when partially consumed, part isagain pushed onto the lower grate, b, the operation being repeated asoften as necessary. rl`he fire-bars c, forming the fire-grates a and b,have lugs, projections, or hooks d at one end, which are let intocorresponding holes or grooves in the cross-bars or headplates, thusholding in place one end only of the fire-bar, the other end being onlysupported gives perfect freedom for expansion or contraction in thedirection of its length. 'Ihe smoke or gas detlector e over the lowerfiregrate, b, serves to deflect the gases or smoke as it passes from theupper grate a, onto the surface of the heated coke on the lower grate,b, thus causing combustion of the gas or smoke before passing into thefines. This deflector may be composed of fire-bricks, firelumps, metaltubes, or hollow casings, which tubes may be connected with the boilerso as to assist in generating the steam, or may be made simply to allowa current of air or water to flow through.

Having thus described the nature of the said invention and the manner ofapplying the same, I wish it to be understood that I do not limit myselfto the details herein set forth, as the same may be considerablymodified without departing from the peculiar character thereof; but

What I do claim as my invention, and desire to secure by Letters Patent,is-

The combination of afurnace divided into upper and lower iire-grateswith the deflector over the lower tire-grate, substantially as above setforth.

N. F. B. DE GHODZKO.

Witnesses J AMES W. BRooKs, E. SHERMAN GoULD.

